Merrell Women's Encore Moc Pro Clog 100% Leather Synthetic sole Air Cushion in the EVA midsole absorbs shock and centers the heel for enhanced stability. Nylon 6.6 injection molded arch shank provides superior arch support, cushioning and stability. Waterproof leather upper helps keep your feet dry. Leather upper, Dri-Lex Shubuck upper lining, Ortholite open-cell polyurethane sockliner... Polyurethane insole, compression molded EVA midsole with air in heel, rubber outsole.